Except the entire purpose of the general public wearing masks is that the person wearing the mask is preventing themselves from putting the virus into the air, particularly since you are most contagious during the first 2 days when most people are asymptomatic.
No one with any knowledge of the science behind the masks will tell you that wearing a normal face covering (anything other than N95) will prevent YOU from getting the virus. It's all about not aerosolizing the virus when you speak/cough/breathe and not infecting others. You should absolutely care if someone else isn't wearing a mask. That is the entire scientific point.
Seek out, "Why masks work better than you think", on YT. It explains how math gives counterintuitive, but better figures. 2 people wearing 50% effective masks gives 75% protection to them because mask on 1st person drops his exhalation to 50% and second 50% mask cuts that inhalation down to 25%. So 100-50%=50 and that 50-50%=25% getting through both masks. It goes on to explain, how with perfect distribution, it would only take 60% of the population wearing 60% effective masks to stop covid, but because maskless tend to mix with maskless it will take a much higher percentage of the population to mask up and get covid under control.
It is true that cloth mask and surgical masks prevent a physical barrier which can help you from coming in contact with fluids expelled when people cough and talk. But once the virus becomes aerosolized and transitions into particles in the air, nothing but an N95 (or higher rated) mask that seals completely to your face will prevent you from breathing the virus in. The virus is simply too small and actually moves between the fabric of face covering masks. I completely agree though, science shows definitively that the more people that wear a mask of any type (except neck gaiters of course) will reduce the amount of virus in the air and the number of people contaminated.
No one with any knowledge of the science behind the masks will tell you that wearing a normal face covering (anything other than N95) will prevent YOU from getting the virus. It's all about not aerosolizing the virus when you speak/cough/breathe and not infecting others. You should absolutely care if someone else isn't wearing a mask. That is the entire scientific point.